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South-West Interconnector becomes fully operational in Germany

CTBR Staff Writer Published 15 September 2017

South-West Interconnector, the Thuringian Power Bridge connecting Bad Lauchstädt (Saxony-Anhalt) via Erfurt-Vieselbach and Altenfeld (Thuringia) to Redwitz (Bavaria) in Germany, is now fully operational.

50Hertz is the operator the South-West Interconnector. The 380kV line is now the second line connecting the north-east of Germany to Bavaria.

It has resulted significant reduction in load on the formerly only connection between Remptendorf in Thuringia to Redwitz in Bavaria.

The two systems or circuits of the South-West Interconnector which has a total length of about 200km,  where 161km falls under 50Hertz grid area and 31km falls under TenneT grid area, can now boast transmission capacity to 5GW.

50Hertz says that it has invested about €320m on this extra high voltage line.

50Hertz’s CEO Boris Schucht stated: “With this line, the integration of electricity generated from renewable sources in the north-east of Germany is improved considerably.

“Furthermore, this substantially higher transmission capacity is an essential precondition for the nuclear power phase-out, as more electricity can be transported from the high-output north-east to the highconsumption south. The line will also ensure that the costs for congestion management can stay stable.”

According to 50Hertz, the interconnector overhead line offers the benefits of transmitting electricity across regions from north to south and from eastern to the south-western region in Bundesländer and in Europe.

With the commissioning of the first of now two circuits on the South-West Interconnector in late 2015 allowed for savings in congestion management to the tune of €80m in the following year.

The interconnector project was constructed in three line sections. The first Line section begins at the Lauchstädt substation near Halle (Saxony-Anhalt) and ends at the Vieselbach substation near Erfurt (Thuringia).

While the second line section connects Vieselbach and Altenfeld, the third line is between Altenfeld and the Thuringian state border.


Image: 50Hertz’s South-West Interconnector now fully operational. Photo: Courtesy of 50Hertz.